Bolster for tank wagons



A. DAVIS. JR;

BOLSTER FOR TANK WAGONS Filed Aug. 15, 1923 ATTORNEY a at ta;

Patented Aug. 25, 1925 UNITED STATES AUGUSTINE DAVIS, J 13., OF COVINGTON, KENTUCKY.

' BOLS'IER FOB TANK WAGONS.

Application filed August 15, 1923.

T all whom it may concern:

Be it known that I, AUGUSTINE DAVIS, J r., a citizen of the United States, and a resident of Covington, in the county of Kenton and State of Kentucky, have invented a new and useful Bolster for Tank \Vagons, of which the following is a specification.

The object of this invention is to provide a bolster for tank wagons of very light yet strong construction. These bolsters are required to support a heavy load, of a h1ghly inflammable nature in the case of gasoline, and must resist the strains of running, collision, etc. The successful construction of such bolsters from relatiiply light sheet metal presents, therefore, a problem, and the herein disclosed combination of form and structure in an integral design has been arrived at as the result of special study and experiment.

In the accompanying drawings illustrating the invention:

Fig. 1 is a plan view of a bolster embodying the invention;

Fig. 2 is an elevation; and

Figs. 3, at and are vertical sections on the lines 33, d l and 5-5, respectively, of Fig. 2.

The holster A is made practically of a single sheet of steel, vertically disposed in the position which it is intended to occupy and horizontally elongated. The top of the sheet is incurred to form an integral cradle 1 for the tank, and at opposite sides of the cradle the sheet is extended to produce lateral wings 2, for the support of runningboards. The tops 3 of these wings are straight, as is also the bottom edge 4 of the sheetextending below and for some distance at opposite sides of the cradle. At either side of the straight bottom, the lower edges 5 curve upward to give a buttress formation to the wings.

The thickness of the bolster is obtained by pressing flanges at one side of the plane of the vertical web so as to extend continuously along the straight and curved portions of both the upper edges 1 and 3 and the lower edges 4 and 5. The upper flange is marked l and 3 and the lower flange a and 5 and it may be noted that the portion 1 of the upper flange, at the cradle, di-

minishes in width from the ends to the mid- Serial N0. 657,486.

dle. This top flange is extended, however, and caused to project at both sides by the apphcation of a metal strip 6 running the length of the cradle curve and centralized over the web. The parts of the composite double flange 1, 6 are united at the edges, as indicated at 7, by wielding, either oxyacetylene or electric. In this way a broad cradle is produced, which is greatly stiffened, owing to the relation of the welded layers.

As thus constructed the bolster requires for vertical bracing only a flat piece 8 of small area, which is welded at top and bottom to the central portions of the edges of the flanges 6 and r, by which it is spaced away from the body web,

Additional angle pieces 9 are welded to the inner face of the web, in the wings, beneath the flanges 3 The horizontally projecting top flanges of these pieces lie against the under sides of the flanges 3 and both are perforated to receive the terminals of thelstraps (not shown) which hold down the tan r,

Other angle pieces 10, having their horizontal flanges at the bottom, are welded to the same face of the web, immediately over the bottom flange l the double flanges at these points being perforated for the bolts which will secure the bolster to the sills of the frame or mounting.

What I claim as new is:

1. A bolster for tank wagons comprising a single vertical elongated sheet having up per and lower flanges. pressed therefrom at one side only, the top of the sheet and the top flange being formed as a downward 1y incurved cradle, and a curved seat plate united to said cradle and projecting laterablly at both sides of the plane of the we 2. A bolster for tank wagons comprising a single vertical elongated sheet having upper and lower flanges pressed therefrom at one side only, the top of the sheet and the top flange being formed as a downwardly incurved cradle, and a curved seat plate Welded to said cradle and projecting laterally at both sides of the plane of the web, in combination with a brace piece spaced from the web and welded to the cradle and to the lower flange.

AUGUSTINE DAVIS, JR. 

